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Infineon Technologies CY2308ZI-1HT — Clock & Timing ICs

Cypress CY2308ZI-1HT Zero Delay Buffer, 133.3MHz, 16-TSSOP

MPNCY2308ZI-1HT
End of Life

Cypress CY2308ZI-1HT, PLL-based Zero Delay Buffer, 133.3 MHz max frequency, 3V–3.6V supply, 2:4 input:output ratio, 16-TSSOP package, -40°C to 85°C operating temperature.

$3.33Ref. price · indicative, final on quote
Infineon Technologies CY2308ZI-1HT datasheet (PDF)
Packaging16-TSSOP (0.173", 4.40mm Width)
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CY2308ZI-1HT specifications
ParameterValue
TypeZero Delay Buffer
MountingSurface Mount
Voltage3V ~ 3.6V
Frequency133.3MHz
Operating temperature-40°C ~ 85°C (TA)
PLLYes with Bypass
InputClock
OutputClock
PackageBulk
Case16-TSSOP (0.173\", 4.40mm Width)
Divider (Multiplier)Yes/No
Number of circuits1
Ratio - Input:Output2:4
Differential - Input:OutputNo/No

Product details

PLL-based zero delay buffer for clock distribution

The Cypress CY2308ZI-1HT is a PLL-based zero delay buffer designed to regenerate and fan out a clock signal with low skew. It accepts a single-ended clock input and provides four buffered outputs, with a maximum output frequency of 133.3 MHz. The integrated PLL can be bypassed, allowing the device to function as a simple clock buffer when PLL cleanup is not required. Operating from a 3V to 3.6V supply and rated for -40°C to 85°C, it suits industrial control, telecom line cards, and networking equipment where multiple synchronous clock domains must be derived from one reference.

The 133.3 MHz maximum frequency covers most reference clocks used in Ethernet PHYs, FPGAs, and SoCs. The PLL bypass mode lets you feed a clean external clock straight through without PLL jitter cleanup.

Supply and temperature range

The 3V to 3.6V supply range aligns with standard 3.3V logic rails.

Note that the part is marked RoHS non-compliant, so it is not suitable for lead-free assembly lines unless explicitly exempted.

Frequently asked questions

What is the equivalent or replacement for CY2308ZI-1HT?

The closest functional peer is the CY2305SXI-1HT, also a PLL-based zero delay buffer in a similar package, but with a 1:5 input:output ratio instead of 2:4. The CY2308ZI-1HT offers two input options and four outputs; the CY2305SXI-1HT provides one input and five outputs. Verify pin compatibility before substituting.

Does CY2308ZI-1HT require external components for PLL bypass?

No. The PLL bypass is an internal mode selected via the control pins — no external passive components are needed to enable or disable the PLL.

What is the difference between CY2308ZI-1 and CY2308ZI-1HT?

The suffix -1HT typically indicates a specific tape-and-reel packaging variant or a minor revision. Functionally both are the same PLL-based zero delay buffer with identical specifications. Confirm the exact ordering code with your distributor to ensure correct packaging.